I bet this S55 will sound like a N54T on steroids with additional rice krispie sounds because of the ppk/sport exhaust like sound. Stupid EU noise pollution rules.

The N/S63 has so much exhaust flow that any solution will unveil a monster sound... I prefer em over ap

It would be nice if BM could make a track edition that catered to the enthusiast that wasn't an exorbitant price for what you are getting. I understand the business case but because BM is doing so well w sales they should take one for the team and offer us a present.

I'm thinking bc valvetronic can fine tune the air injection w such fidelity there will less delta between throttle input which takes away from the sound of the ITB